[QGIS-trac] Re: [Quantum GIS] #1472: Very slow shapefile editing, CPU usage maxes out. 1.0, on Intrepid AMD64

[Quantum GIS]

#1472: Very slow shapefile editing, CPU usage maxes out. 1.0, on Intrepid AMD64
-----------------------------------------------------+----------------------
        Reporter:  FiReSTaRT                         |         Owner:  mhugent             
            Type:  bug                               |        Status:  new                 
        Priority:  major: does not work as expected  |     Milestone:  Version 1.0.1       
       Component:  OGR Layer support                 |       Version:  1.0.0               
      Resolution:                                    |      Keywords:  shp, shapefile, edit
Platform_version:  Ubuntu Intrepid 8.10              |      Platform:  Linux               
        Must_fix:  No                                |   Status_info:  0                   
-----------------------------------------------------+----------------------
Comment (by jef):

 Replying to [comment:1 FiReSTaRT]:
 > Download link for the dataset in question. Larger datasets took even
 longer to perform the editing operations.
 http://mesa.geographynetwork.com/out/data/at_tigeresri6709103134.zip

 The link didn't work for me, but I downloaded
 http://www2.census.gov/geo/tiger/TIGER2008/tl_2008_us_state.zip and could
 reproduce your problems.

 Are you sure you used the same datasets with 0.11?  Looks like QGIS is
 very slow on polygons (or all features) with an huge number of points (ie.
 drawing of polygons (Qt), highlighting polygons, area calculations and
 more).

 r9916 speeds up highlighting of polygons a bit.

-- 
Ticket URL: <http://trac.osgeo.org/qgis/ticket/1472#comment:3>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats